AMD Radeon HD 7850 vs AMD Radeon 660M
GPU · Specs Compare
Graphics Card
Release Date
Mar 2012
Jan 2022
Generation
Southern Islands
Rembrandt
Type
Desktop
Integrated
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x8
Clock Speeds
Memory Clock
1200 MHz
System Shared
Base Clock
—
1500 MHz
Boost Clock
—
1900 MHz
Memory
Memory Size
2GB
System Shared
Memory Type
GDDR5
System Shared
Memory Bus
256bit
System Shared
Bandwidth
153.6GB/s
System Dependent
Render Config
Compute Units
16
6
Shading Units
1024
384
TMUs
64
24
ROPs
32
16
L1 Cache
16 KB (per CU)
128 KB per Array
L2 Cache
512 KB
2 MB
RT Cores
—
6
Theoretical Performance
Pixel Rate
27.52 GPixel/s
30.40 GPixel/s
Texture Rate
55.04 GTexel/s
45.60 GTexel/s
FP32 (float)
1.761 TFLOPS
1459 GFLOPS
FP64 (double)
110.1 GFLOPS
91.20 GFLOPS
FP16 (half)
—
2.918 TFLOPS
Graphics Processor
GPU Name
Pitcairn
Rembrandt
GPU Variant
Pitcairn PRO(215-0828062)
—
Architecture
GCN 1.0
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
6 nm
Transistors
2.8 billion
13.1 billion
Die Size
212 mm²
210 mm²
Board Design
TDP
130W
15W
Suggested PSU
300 W
—
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
No outputs
Power Connectors
1x 6-pin
None
Graphics Features
DirectX
12 (11_1)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
1.2
2.0
Vulkan
1.2
1.2
Shader Model
5.1
6.5
Benchmark
3DMark Time Spy
1,334
1,537
3DMark Time Spy Extreme
325
701
▲ Specs Compare
Data sourced from official specifications and benchmark tests.